US75530A - George crompton - Google Patents

Description

GEORGE C RO MPT() N, 0 F t WORGESTE R, MASSACHUSETTS.'

Letters Patent No. 75,530, and March 1t, 1868.

1 IMPROVEMENT IN LOOMS.

@tigt Stlptult meint tu'r these tettets- 'i'tmt'imt hitting mrt nt tlptmn.

V V'lO ALL WHOM ITMAY CONCERN:

Be it known that LGEORGE CRoMPTONfoF Worcester, in the county ot' Worcester, anll State of Massachusctts, have invented certain new and useful Improvements in Looms; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part-ot' this specification, is a description of myv invention sutlicient to enable those skilled in the vart to practise it.

'lhe invention relates partly to the harness-mechanism and partly to the movable shutter-box mechanism of fancy hoons.y A 'l 4 The invention 'consists `prinfxrarily in combining withaiifter and a dcpresser working as levers from fulcra in' the vertical lplane ofthe cloth-making line, and with jacks having slots in which the lifter and depresserlevers work to' insure the proper rise and'fall of the jacks, two horizontal cvener-arms between which the heddlelevers extend, the even'ers acting as clamping-jaws, to not only even the jacks after each change produced by4 the -pattern-cylinder, but by clamping them together, :to remove them with certainty from all strain ofthe lifter and depresser-levers, so. that as the slots come into line, the tension upon thejacks shall free them frolthe lifter and de'presser, and ,straighten them in'to line, ready for the next change to be produced by the patterncylinder. if

The invention further consists'in the arrangement or construction of the mechanism connecting the tappetlever, which works the shuttle-boxes, with thc rod upon which cach set of boxes is supported.

The drawings representa loom-frame with my improvementsemboded thereupon, showing an end view,

B a front elevation. C is a view of the rear side of thetstirrup which supports the shuttle-box rod. a' denotes the frame, b the lathe, cc theharness-leaves or frames, each suspended betweenan upper Aand a lower heddlelever, d, the series of levers being supported on shafts e, and being connected' at their front ends by upright 1 jacks or hooks,f, and` straining-wires,g. Each jackf has a slot, g', cut into each of its opposite edges, said slot being made wideA enough to allow it to slip freely into and out of connection with either the lifter-bar or lever h, or the depresser-bar or lover z'. Y Th'lifter and depresser-leversarev fulerumed at k and Z, in or about in the plane of the cloth-making line, and they are actuated by slide-rods 7c', (to which they are adjustably connected,) these rods being raised and lowered by cranksrZZ-on the main'shaftv m. v

Each jack is carried into connection with either the lifter or depresser at or about the time the shed isclosed, by the action upon it of thepatternfeylinder n, the particular leaf with which each pair of heddle-levers is connected being raised or` lowered to form with the other leaves the desired shed, accordingly as its jack may be thrown intoconnection with either the lifter er clepresser.

At the upper end of each slide-rod cY is a horizontal evencr-bar, a, the one upon the rod which carries thev lifter-lever extending over the heddleilevcrs, and the one on the rod which carries the depresser-lever 4extending under the heddle-levers, as shown at B.

When the lifter and depresser work slots in the jacks, and are arranged to operate from fulcra, and are actuated by the slide-rods, as shown, it sometimes happens that some particular jack clings on to the lifter or` depresser-lever too long,'or is not freed therefrom by the tension oi' the 'wire quickly enough to be actuated by the studs or teeth on the pattern-cylinder or chainfor the next-shed. 'lo obviate this, or to insure the loosening of the jack-notches from thclifter and clepresser-levers, I apply the horizontal eveners to the slide-rods c, as shown, or in such manner'thatjust before the cylinder is to produce the change, the upper heddle-levers are clamped betveen the cveners-bars, which are so positioned upon the slide-rods, that when they close upon the levers the respective slots arenot .only brought intov line, but with such relation to the elevator or depresser-` lever, that their `upper and lower surfaces are carried out of yline with the adjacent edges of the elevator or deprcsscr-levers, so that the tension on the jacks cannot fail to bring the jacks into line for the next change to be produced by the pattern-cylinder.

'.lhe li'ulera't'lof the lifter and depresser-levers are stationary, and the vibrating ends ot' the levers are slotted, as seen att-a2, the levers being connected to the slide-rods by pins bz'extending through the slots, the

i levers slipping'or playing upon these pins, as they vibrate, this construction being in contradistinction to connecting the levers to the slide-rodsfunyieldingly, (endwise,) and allowingthe fulcra toj'play in their slots. In

connection with giving this capability of play to the levers, by tho slotsf at the pins b2, by which 'they are connected to the rods 7c', the stationary fulcra are made adjustable by means of the slots o2 in the plate to which the levers are fulerumed. I

The movable shuttle-boxes are shown atpp, they being of' that class in which the change is made from piel; to pick by vertical movement of the boxes.

Each set of boxes is mounted on a vertical rod, q, supported upon' a spring, 1', which spring rests upon the top of a strrup,s, the rod passing through the stirrup, and it and the boxes being held normally in position relatively thereto by the stress of the spring 1', while such spring allows the strirrup to work 'up against the spring and towards the boxes, whenever' the free upward movement of the boxes may be obstructed, a collar or stop, t, determining the downward movement of the stirrnp upon the rod. Each rod slides freely through an arm, et, projecting from the frame a, the bearing v extending in between thc side mills of thel stirrnp, as shown at D, which represents a cross-section through the stirrup. The employment of the stirrup to receive and cai-'ry the rod, and as a means of' connection between the tappct-lever and the rod, makes a much stronger and more reliable provision for supporting the rod and insuring the proper movements ot' the boxes, than can bc made `with a direct connection between the lever and rod, as iu the ordinary construction. Each stirruprod, with the boxes, is actuated from tappets w, on the tappet-shaft c,` through a lever, 7 hung on a fulcrum, s, and connected at its front end to the stirtup, thc weight of the boxes and their connections, holding the piu al against the l'ncc of the tappets, while the movementof any tappet brings anyparticular box into line in the usual manner.

Instead of making a direct connection of the tappeti-lever to the rod or thc stirrup, I make such connection" through a link, bl, and Ijoint this link to the stirrup in or nearly in line with the journals o" on which the lathe vibrates By this arrangement, the rod is entirely freed from all lateral strain, (tending or which might tend to cause the boxes to bind in their gudes,) both from the motions of the tappetdever and the vibrations of thc lathe, and no vertical movement of the boxesy can take place except at the proper time, such vertical movement or play being irremediable during the vibrations of the lathe under the different positions of the boxes for thc various picks, when theconncction is made withoutthe linlc. The link is connected to the stirrup by an adjustingscrew and nut, working through a slot in the stirrup, this allowing the movement of the boxes 'to be adjusted so as to bring them or insure their being brought more perfectly into line with the shuttle-racc.

. I claixmrin combination with angular lifter and dcpresser-levers, working upon fulcra iu the plane of the cloth-making line, horizontal rigid evener-bars fixed to the slide-rods and operating to even the jacks, substantially as described. 'I Y,

I also claim, in combination, horizontal rigid eveners, secured to slide-rods, angular lifter and depresserlevers, and the slotted jacks, substantially as described.

I also claim the slotted angular lifter andvdepresser-levers, working on stationary fulcro, combined substan tially as described with the slide-rods.

I also claim angular lifter and deprcsser-lcvers, vibrating onstationary but adjustable fulcro, and fixed by sliding or yielding connections to the actuating-rods,substantially as described.

Also, in combination with the movable shuttle-boxes and mechanism for supporting and fOrhanging them, the stirrup s, arranged to operate substantially as described.

Also, in combination with the tappct-levcr and st-irrup, constructed as describedthe link b, connecting the iever and stirrup, and arranged relatively thereto, substantially as described.

GEO. CROMPTON.

Witnesses:

Hormon WYMAN, J. A. Wenn.

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